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Abstract and Applied Analysis
Volume 2012 (2012), Article ID 437912, 13 pages
doi:10.1155/2012/437912
Research Article
Existence of One-Signed Solutions of Discrete Second-Order Periodic Boundary Value Problems
Department of Mathematics, Northwest Normal University, Lanzhou 730070, China
Received 2 September 2011; Accepted 24 October 2011
Academic Editor: Agacik Zafer
Copyright © 2012 Ruyun Ma et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
We prove the existence of one-signed periodic solutions of second-order nonlinear difference equation on a finite discrete segment with periodic boundary conditions by combining some properties of Green's function with the fixed-point theorem in cones.